Pages

The evolution of guitar amp circuits becomes a revolution! TUT6 takes you through advanced DC Power Scaling methods; reveals the secrets of Dumble amps; explores the truth about high-gain preamps; demonstrates how to build Z-B-X push-pull power amps with a single power tube; simplifies the design of 400W+ tube amps - methods that can be applied to any power level; presents class-G tube amps where 100W of output has the same waste heat as a 25W amp; explores modern mains control and sustain circuitry.
312 Pages, 404 figures, spiral bound, 9" x 11"

London Power DIY Speaker Cabinets for Musical Instrument Applications. Speaker cabinet design is mysterious to most people, but it doesn't have to be - especially when it comes to speakers for musical instruments. Cabinet evolution is described culminating in Kevin's own designs built by London Power, based on 20+ years of experience and input from expert speaker designers. Resonant and non-resonant cabinets are explored, along with the choice for building materials, finishes, woodworking techniques, installing grill cloth, and the use of wheels and handles. Driver selection and mixing is detailed, covering driver impedance, power ratings and wiring.

Every part of your system contributes to your Ultimate Tone, so every part is important. TUT5 delineates, in clear language, the function of each electronic component in a circuit, and how alterations to the value of each part affect the final sound. Gain stage voicing, interstage attenuator optimization, sustain restoration for clean and distorted tones, power amp and preamp "tone generators", simple boost pedals, amp selectors and power conditioners are all covered, with designs using off-the-shelf parts.

Outlines, in schematic form, many approaches that achieve the goal of power scaling, super scaling and power management. A complete history and discourse on the technology outlines how to implement multiple power scale controls, alternative circuit forms and system impacts. Further tutorials outline the methods for super scaling, with both fixed and variable boost ratios, using both solid-state and tube methods.

A comprehensive manual for designing power amps and phase inverters from scratch, this book provides the engineering details that professional amp builders need to create new circuits. To determine how component values effect the dynamics of an overdriven power stage, the author includes full blown studies of grid bias excursion, power supply sag and negative feedback effects.
Softbound, 376 pages, 1.7 lbs

Vacuum Tube Circuit Design: Guitar Amplifier Preamps
By Richard Kuehnel
Written for experienced builders who want to design their own circuits from the ground up, this book presents a comprehensive study of triode and pentode preamp design. From the impedance characteristics of the guitar pickup, to the Miller capacitance at the second-stage tube grid, the author describes how to manipulate frequency response and control the dynamics of nonlinear distortion.
Softbound, 223 pages, 1.1lbs

Mods, Repairs & Trouble Shooting
A two hour tour using actual vintage amplifiers. Hear the symptoms and watch how to repairs. Volume III includes several takes on transformer replacement, how to resurrect that old garage sale find, including the complete rehab of a '58 Tweed Deluxe as well as amp modding. Watch the famous "PAUL C" mod applied to a Princeton Reverb, add some spank to a Bandmaster or put some fire in the Bass Channel of a '66 Bassman and much more.